GB521492A - Improvements in the production of diazotype light-sensitive layers - Google Patents

Improvements in the production of diazotype light-sensitive layers

Info

Publication number
GB521492A
GB521492A GB27398/38A GB2739838A GB521492A GB 521492 A GB521492 A GB 521492A GB 27398/38 A GB27398/38 A GB 27398/38A GB 2739838 A GB2739838 A GB 2739838A GB 521492 A GB521492 A GB 521492A
Authority
GB
United Kingdom
Prior art keywords
amines
sodium
group
nitrating
general formula
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB27398/38A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
S C & P Harding Ltd
Original Assignee
S C & P Harding Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by S C & P Harding Ltd filed Critical S C & P Harding Ltd
Priority to GB27398/38A priority Critical patent/GB521492A/en
Priority to US301953A priority patent/US2198827A/en
Publication of GB521492A publication Critical patent/GB521492A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/52—Compositions containing diazo compounds as photosensitive substances
    • G03C1/54—Diazonium salts or diazo anhydrides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Color Printing (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

521,492. Photographic diazotype processes. HARDING, Ltd., S. C. & P., and LEUCH, W. P. Sept. 20, 1938, No. 27398. [Class 98 (ii)] [Also in Group IV] Diazo compounds derived from amines of the general formula where X is an isopropyl radical or a radical containing four or more carbon atoms and Y is an aliphatic acyl group, are used in the diazotype process. Y is preferably an acetyl group. X may also be a n-butyl group. Paper may be coated with an aqueous solution of the zinc chloride double salt of the diazo compound from 4- amino - 1 - acetylamino - hydroquinone - dibutyl ether, tartaric acid, and aluminium sulphate, and after exposure developed with an aqueous solution of phloroglucinol, resorcinol, tartaric acid, sodium tartrate, sodium formate, and sodium benzoate. Amines of the above general formula are prepared from the appropriate hydroquinone ether by nitrating, reducing and acetylating, and either nitrating and reducing or coupling with a diazo compound such as diazotised sulphanilic acid and splitting the dyestuff obtained. The amines may be diazotised and the diazo compounds precipitated with zinc chloride and sodium chloride. Specifications 347,430 and 425,235 are referred to.
GB27398/38A 1938-09-20 1938-09-20 Improvements in the production of diazotype light-sensitive layers Expired GB521492A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB27398/38A GB521492A (en) 1938-09-20 1938-09-20 Improvements in the production of diazotype light-sensitive layers
US301953A US2198827A (en) 1938-09-20 1939-10-30 Production of diazotype light-sensitive layers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27398/38A GB521492A (en) 1938-09-20 1938-09-20 Improvements in the production of diazotype light-sensitive layers

Publications (1)

Publication Number Publication Date
GB521492A true GB521492A (en) 1940-05-23

Family

ID=10258932

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27398/38A Expired GB521492A (en) 1938-09-20 1938-09-20 Improvements in the production of diazotype light-sensitive layers

Country Status (2)

Country Link
US (1) US2198827A (en)
GB (1) GB521492A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439901A (en) * 1941-12-27 1948-04-20 Henry T Neumann Method for producing colored photographs
NL61567C (en) * 1945-09-07
US2776888A (en) * 1954-07-15 1957-01-08 Pop Gregorio Photographic sensitizer and developer
DE1251656B (en) * 1963-02-01 1967-10-05 Chemische Fabriek L van der Grinten N V, Venlo (Niederlande) Diazotype material containing an o-Ammo benzoldiazoverbmdung
JPS6344648A (en) * 1986-08-12 1988-02-25 Matsushita Electric Ind Co Ltd Contrast enhanced material for pattern formation

Also Published As

Publication number Publication date
US2198827A (en) 1940-04-30

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